It is using YiiBooster - many thanks to Clevertech, and especially Antonio Ramirez. You rock!
And, of course: Chris who wrote the 'original' Bootstrap module.

Of special note is the jQuery plugin Tocify, which does what Affix does, but automatically from the headings.
See it in action here:http://www.jacmoe.dk/aptosid-reviewed
I will probably turn it into an extension - perhaps it could be added to YiiBooster.